Add motion planning actions and services for iiwa robot

- Implemented action servers for MoveToPose and MoveToJoints.
- Added service for MoveToNamedPose and stop action.
- Updated README with usage examples for new actions.
- Enhanced planning configurations in YAML and Python files.
- Removed deprecated motion planning scripts.

src/iiwa_planning/CMakeLists.txt

@@ -37,13 +37,6 @@ install(TARGETS
   DESTINATION lib/${PROJECT_NAME}
 )
 
-install(PROGRAMS
-  scripts/motion_planning_test.py
-  # scripts/motion_planning.py
-  DESTINATION lib/${PROJECT_NAME}
-  RENAME motion_planning
-)
-
 install(PROGRAMS
   scripts/move_to_pose_server.py
   DESTINATION lib/${PROJECT_NAME}